Ciric, LukaPierzchala, KatarzynaSienkiewicz, AndrzejMagrez, ArnaudNáfrádi, BálintAlexander, DuncanWarner, JamieShinohara, HisanoriRuemmeli, MarkPichler, ThomasBriggs, G. Andrew DForró, László2008-10-102008-10-10200810.1002/pssb.200879650https://infoscience.epfl.ch/handle/20.500.14299/30219WOS:00026058180003513726Electron microscopy (TEM) and electron spin resonance ESR) were applied to characterize lanthanum metallofullerene(La@C82)-filled peapods. The peapods were prepared by encapsulation of La@C82 in SWCNTs, which were obtained by laser ablation technique in the presence of nonmagnetic catalysts Pt : Rh : Re. Empty fullerenes, C60, were used as separators for the spin-active La@C82. TEM analysis confirmed filling of peapods with both C60 and La@C82 molecules. ESR spectra acquired in the temperature range from 5 K to 295 K provided indirect evidence of encapsulation of the spin-active La@C82 in carbon nanotubes and pointed to marked differences in magnetic properties of peapods as a function of the relative concentration of La@C82. Preliminary ESR studies of the photo-physical properties of La@C82 in CS2 revealed that, under illumination with white light, La@C82 neither generated singlet oxygen nor was photoactive against a paramagnetic target, nitroxide radical (TEMPO).text::journal::journal article::research article